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Absorption redshift in TiO2ultrafine particles with surfacial dipole layer

 

作者: Bingsuo Zhou,   Liangzhi Xiao,   Tie Jin Li,   Jialong Zhao,   Zhuyou Lai,   Shiwei Gu,  

 

期刊: Applied Physics Letters  （AIP Available online 1991）
卷期: Volume 59, issue 15  

页码: 1826-1828

 

ISSN:0003-6951

 

年代: 1991

 

DOI:10.1063/1.106211

 

出版商: AIP

 

数据来源: AIP

 

摘要:

It is found that the TiO2ultrafine particles (UFP) coated with a layer of stearic acid radicals had a significant red shift of their absorption band edge and clear photoluminescence at room temperature (RT), which are in contrast with that of bulk TiO2and naked TiO2UFP. It was concluded that these results are related to the self‐trapped exciton absorption due to the interfacial dipole layer of stearic acid radicals on the TiO2UFP surface.

 

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